NI 9437 Getting Started Guide
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© National Instruments
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5
Safety Voltages
Connect only voltages that are within the following limits.
Channel-to-COM, V
SUP
-to-COM ..... 300 VDC max
Isolation
Channel-to-channel .................... None
Channel-to-V
SUP
......................... None
Channel-to-earth ground, V
SUP
-to-earth ground,
COM-to-earth ground
Continuous ........................... 300 V
rms
, Measurement
Category II
Withstand ............................. 3,000 V, verified by a 5 s
dielectric withstand test
Measurement Category II is for measurements performed on
circuits directly connected to the electrical distribution system.
This category refers to local-level electrical distribution, such as
that provided by a standard wall outlet, for example, 115 V for U.S.
or 230 V for Europe.
Caution
Do
not
connect the NI 9437 to signals or use for
measurements within Measurement Categories III or IV.
